Nassau County Lake Quality
New York, 8 lakes, measured by NY DEC
Nassau County has 8 monitored lakes — a thin enough sample that one or two stressed lakes can move the county average noticeably. Use the per-lake pages below for what actually matters. The 8 monitored lakes in Nassau County carry whatever clarity, phosphorus, and chlorophyll-a readings NY DEC has published, shown as reported.
Most of the county's monitored lakes are shallow, under 50 feet, which means wind keeps the water column mixed all summer and sediment-bound phosphorus releases back into the surface layer whenever the bottom is disturbed.
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Quick Answers for Nassau County
Planning a trip? Check special fishing regulations for Hempstead Lake — or check the official New York fishing regulations.
All Lakes in Nassau County
8 lakes · 0 ranked on readings, 8 without enough sampling0 lakes ranked on readings · 8 without enough sampling, hidden
| # | Lake | Clarity | Phosphorus | Algae | Trophic | Max Depth | Access |
|---|---|---|---|---|---|---|---|
| Hempstead LakeNassau | No recent samples | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| Smith PondNassau | No recent samples | No recent samples | No recent samples | No recent samples | 3.3 ft | Not recorded | |
| Lake SuccessNassau | No recent samples | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| Dosoris PondNassau | No recent samples | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| Beaver LakeNassau | No recent samples | No recent samples | No recent samples | No recent samples | 7.5 ft | Not recorded | |
| Massapequa LakeNassau | No recent samples | No recent samples | No recent samples | No recent samples | 1.6 ft | Not recorded | |
| Seaman PondNassau | No recent samples | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| Gugenheim PondNassau | No recent samples | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded |
NR = no nutrient or algae reading on record. The measurements are published as the authority reports them. Where the data comes from.
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Source: the New York Department of Environmental Conservation. See data sources.